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Finding the Fourth Proportional to 515,813.70, 773,064.45 and 248,999.70

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Solution

The fourth proportional to 515,813.70, 773,064.45 and 248,999.70 is: 373,182.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,813.70 : 773,064.45 = 248,999.70 : x
  2. Step 2: Convert to fraction form
    515,813.70/773,064.45 = 248,999.70/x
  3. Step 3: Cross multiply
    515,813.70x = 773,064.45 × 248,999.70
  4. Step 4: Simplify right side
    515,813.70x = 192,492,816,130.67
  5. Step 5: Solve for x
    x = 192,492,816,130.67/515,813.70
  6. Step 6: Final answer
    x = 373,182.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.